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Finding the Fourth Proportional to 82,476.60, 123,714.90 and 70,666.80

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Solution

The fourth proportional to 82,476.60, 123,714.90 and 70,666.80 is: 106,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,476.60 : 123,714.90 = 70,666.80 : x
  2. Step 2: Convert to fraction form
    82,476.60/123,714.90 = 70,666.80/x
  3. Step 3: Cross multiply
    82,476.60x = 123,714.90 × 70,666.80
  4. Step 4: Simplify right side
    82,476.60x = 8,742,536,095.32
  5. Step 5: Solve for x
    x = 8,742,536,095.32/82,476.60
  6. Step 6: Final answer
    x = 106,000.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.